Omo sms

Got an sms from Mr Jim White won R 1mil in a competition. Sms winning code OM650SA to 0724505309 then phone back. I was told that I shoud buy a MTN voucher for R 180 in order to activate. Fnb will contact me an a Cheque will be hand delivered to me once my account is activated. I never entered any competition. The SMS came from the following no +27614173121. I wish that all these people can be arrested and stop trying to steal money from us.